Answer
$a_n=12n-5$
Work Step by Step
The nth term of an arithmetic sequence can be obtained by the following formula: $a_n=a_1+(n-1)d$, where $a_1$ is the first term and $d$ is the common difference.
Thus $a_n=a_1+(n-1)d=7+(n-1)12=7+12n-12=12n-5$
